若某面向对象系统中的某子模块需要为其他模块提供访问不同数据库系统(Oracle、SO

题型:单项选择题

问题:

若某面向对象系统中的某子模块需要为其他模块提供访问不同数据库系统(Oracle、SOL Server、DB2 UDB等)的功能,这些数据库系统提供的访问接口有一定的差异,但访问过程却都是相同的,例如,先连接数据库,再打开数据库,最后对数据进行查询。()设计模式可抽象出相同的数据库访问过程。

A.外观(Facade)

B.装饰(Decorate)

C.单例(Singleton)

D.模板方法(Template Method)

考点:计算机软件水平考试中级软件设计师中级软件设计师上午试题
题型:单项选择题

义务教育是国家必须予以保障的()事业。

题型:单项选择题

不同型的电缆之间()直接连接。

A、可以

B、必须

C、严禁

题型:单项选择题

前吧是由吧台和操作台组成的,它们之间的高度差一般为()。

A、120~125cm

B、85~90cm

C、50~60cm

D、25~35cm

题型:单项选择题

下列反应不存在化学反应限度的是(  )

A.合成氨反应

B.氢氯爆鸣反应

C.SO2的催化氧化反应

D.氯气溶于水生成盐酸和次氯酸

题型:单项选择题

The British show a great love for the countryside and it is really nice and beautiful. A lot of people dream (梦想) about living in the countryside, to enjoy the quiet and the air. Today, many people, both old and young, make the dream come true. But most people have to live in a town or city because that is where the work is.
People of a city are often proud (自豪的) of living in it. People of Manchester believes that there is no better city than Manchester; people of Liverpool feel the same way about Liverpool. Outsiders and passing travelers may be interested in what the difference is between one city and another. Maybe they remember Newcastle because of its bridge over the River Tyne, or Liverpool because of its docks (码头). There is one difference which most people can hear; that is the different ways of speaking and also some words which are used only in one place. In Newcastle, for example, "hoy" is used instead of "throw", and "marra" instead of "friend", as is shown in the sentence "Hoy the ball to me", and "He’s my marra at work in the factory.\

A city is usually remembered for ______.
[A] what there is in the center of it
[B] the number of people living in it
[C] what makes it different from other cities

更多题库